Spread ¾ of the fennel on a baking tray lined with baking paper, drizzle with oil, season with salt.
Approx. 45 mins. in the centre of an oven preheated to 200°C. Remove, serve on a platter.
Combine the lemon juice and oil, season.
Arrange the nectarines, peaches, remaining fennel and Mozzarelline on top of the fennel, drizzle with the dressing, garnish with the basil.